expected
Magic Enum C++
expected | Magic Enum C++ | |
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18 | 44 | |
1,404 | 4,424 | |
- | - | |
2.1 | 8.1 | |
4 months ago | 6 days ago | |
C++ | C++ | |
Creative Commons Zero v1.0 Universal | MIT License |
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expected
- Functional Programming in Modern C++: The Imperatives Must Go – Victor Ciura [video]
- Functional exception-less error handling with C++23's optional and expected
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C++23's New Fold Algorithms - C++ Team Blog
On this topic Sy Brand is a guarantee, in fact he did the https://github.com/TartanLlama/expected and several presentation of the subject.
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What is the status of the monadic operations for std::expected? It seems like they made it into the standard for C++23, but they don't actually seem to be available in the std::expected implementation (in MSVC's STL)
In the meantime, I may use the TartanLlama implementation (here) and plan around replacing it with the real deal in the near future.
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ADSP Episode 114: Rust, Val, Carbon, ChatGPT & Errors with Barry Revzin!
Sy Brand's tl::expected
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Daily bit(e) of C++ | Error handling
expected is my favourite little part of cpp23, I’m using it often in codebase with https://github.com/TartanLlama/expected 😁
- Noticing the the difference in coding when going back to C++
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What are some cool modern libraries you enjoy using?
outcome and/or expected
- Do you use builder pattern?
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Why should I have written ZeroMQ in C, not C++ (2012)
Eventually you'll be able to use std::expected in C++23!
https://en.cppreference.com/w/cpp/header/expected
Don't throw exceptions, require the caller to handle errors and propagate them up the stack (everything returns an expected) if they cannot be handled. You are forced to model the error domains instead of just throwing an exception and assuming the caller knows to catch it and do something with it.
Java has checked exceptions, but, Kotlin decided to abandon them.
The nice codebases I have worked on stick to the Result type in Swift or Kotlin. And thus you are forced to 'translate' errors (exceptions?) as described in Alan Griffith's 'Exceptional Java'.
https://accu.org/journals/overload/10/48/griffiths_406/
"If a checked exception is thrown (to indicate an operation failure) by a method in one package it is not to be propagated by a calling method in a second package. Instead the exception is caught and "translated". Translation converts the exception into: an appropriate return status for the method, a checked exception appropriate to the calling package or an unchecked exception recognised by the system. (Translation to another exception type frequently involves "wrapping".)"
If you can't wait for C++23, there's a single header implementation here.
https://github.com/TartanLlama/expected
Magic Enum C++
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What C++ library do you wish existed but hasn’t been created yet?
I'm not sure this is quite what you're asking for, but this library has been super helpful to me in the past : https://github.com/Neargye/magic_enum
- Usable Magic Enums for C++
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Fully Permissive License C++ Logger For Embedded System
Also, a shoutout to Magic Enum: https://github.com/Neargye/magic_enum
- Favorite Ways of Stringifying Enums
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enum_name (yet another enum to/from string conversion utility >=C++11)
What does this have to offer over magic_enum?
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quill v2.7.0 released - Asynchronous Low Latency C++ Logging Library
But it's a hack, and I prefer not to use hacks in production, because of their significant limitations:
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Enums print numbers instead of words
You can either write a to string(view) function for your enum or use https://github.com/Neargye/magic_enum
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Enums with methods
Why reinvent the wheel? magic_enum
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Error: Boost bimap can't convert const CompatibleKey to Key&
Also if you want to convert enum members to string representation I suggest you just use magic_enum instead, much smaller dependency.
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Macro to write enum and converter from and to string
Magic Enum provides that.
What are some alternatives?
libCat - 🐈⬛ A runtime for C++26 w/out libC or POSIX. Smaller binaries, only arena allocators, SIMD, stronger type safety than STL, and value-based errors!
Nameof C++ - Nameof operator for modern C++, simply obtain the name of a variable, type, function, macro, and enum
AECforWebAssembly - A port of ArithmeticExpressionCompiler from x86 to WebAssembly, so that the programs written in the language can run in a browser. The compiler has been rewritten from JavaScript into C++.
Protobuf - Protocol Buffers - Google's data interchange format
cpp-libp2p - C++17 implementation of libp2p
cereal - A C++11 library for serialization
Thrust - [ARCHIVED] The C++ parallel algorithms library. See https://github.com/NVIDIA/cccl
FlatBuffers - FlatBuffers: Memory Efficient Serialization Library
magnum - Lightweight and modular C++11 graphics middleware for games and data visualization
Boost.Serialization - Boost.org serialization module
stb - stb single-file public domain libraries for C/C++
pfr - std::tuple like methods for user defined types without any macro or boilerplate code